Steam-boiler



(No Moden) D. M. KIRBY.

STEAM BOILER.

No. 340,327'. Patented ApInZO, 1886.V

.1. [by .WF lng T I .7L /f :i :lul o #im i Nrran STATES v ATENT Clinics.,

DICK M. KIRBY, OF AUBURN, NEV YORK.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 3Q0,32'7, dated April 20, 1886.

Application filed December 22, 1895. Serial No. 196,413. (Xo modell To all whom, it may concern.'

Be it known that I, Dick M. KIRBY, a citi` zen of the United States, residing at Auburn, in the county of Cayuga and State of New York, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to base-burning steam-generators with a central magazine for coal; and the object ofthe invention is to simplify the construction and to make the firebox in hollow cast-iron sections, serving as waterspaces, and to suitably connect the same with each other and with a coil, which may be irregularin contour. 4

Other objects and advantages of my invention will appear in the following description, and the novel features thereof will be particularly pointed out in the claims.

Referring to the drawings, Figure l is a central vertical section of a steam-generator constructed in accordance with my invention. Fig. 2 is a perspective of the cap-section, and Fig. 3 of a base or lower section of the fire box constructed in accordance with my invention.

Like letters indicate like parts in all the figures of the drawings.

To a suitable annular base, A, forming the aslrpit, to which access is had throngh a door, A', is arranged in any suitable manner the grate B, which may be shaken by means ofthe lever B. The base is provided wit-'h an inwardly-projecting annular flange, A2, upon which, in order to form the fire-box proper of the generator, I mount one 01 more annular hollow castings or east sections, C, having radial recesses C in its upper edge; and between the recesses C are apertures C2, which communicate with the interior of the section, so that when another section is mounted upon the section C similar apertures in said other section register with said apertures C2, and thus direct communication between a series of sections is provided.

At the lower end of the section C is arranged a pipe, I), which at that point communicates with the interior of the section, passes upward, and then inwardly through both the inner and outerwall of the section into the space inclosed by said inner wall, where it communicates with the coil E, arranged with in the section or fire-box. rlhe point of connection of the pipe D with the coil E is shown in saeetion at D. The upper end of the coil is shown in like manner at E, extending through one of the recesses O of the section C, while another of said recesses C', on the opposite side of the lire-box and near its top, is represented as unoccupied, and forms a passage for the products of combustion.

The cap-section 7employed with the section or series of sections C (illustrated in Fig. 3) consists, as shown inFig. 2, of an annular casting, F, which is hollow, asv shown in Fig. 1, and is provided with pipes F, communicating withits interior. The pipes F communicate with similar pipes, G, which are fitted in the outer wall 0f the lower section, C, and communicate with the interior thereof. A T branch connects the pipes F' and G opposite one of the recesses C of the lower section, and the coil E is connected to the T-joint. The threads of the connections of the pipes F and G and the T' joint are such that by turning the vertical portions of said connecting-pipes the cap F is drawn snugly in contact with the section C. There may be as many of said connecting-pipes for the cap and the lower or adjacent section as desired. rlhe central opening, F2, in the upper cap is preferably more 01 less flared, and

terminates below with an inwardly-projecting flange, F, for the purpose of supporting the magazine H, which is cast with a peripheral liange, Il', thereon, which comes in contact with and rests upon the annular iiange F3. A suitable cover, H2, is provided for the magazine. rlhe outletpipe I issues from the hollow top casting or cap,F,and a steam and water gage, J, is arranged to communicate with said cap and with the water-space of the lower section. From the top of the cap is sup ported a depending cylindrical intermediate shell or diaphragm, K,which does not extend completely to the base A2, and is to direct the products of combustion downward against the surface of the boiler. An exterior jacket, L, is mounted upon the base and incloses the entire-structure heretofore described, and has at its top an uptake or smoke-stack, M, which communicates with its interior. A fusible ICO plug or other safety appliance, N, may be provided in such manner as to have communication with the interior of the upper chamber or cap, F. A draft-flue, O, is also provided, passing through the several jackets and sections, and communicating with the interior of the lower section, or the lire-box proper. This iue may be formed on or asa part ofthelow er section, as shown in Fig. 3, or it may be constructed separately therefrom, as desired. The coils may be supported upon brackets P, secured to or formed on the inner wall of the lower section, or they may be supported by any ordinary hanger depending from the upper portion of the apparatus.

This being the construction,tl1e operation is as follows: Coal being fed through the magazine and a supply thereof being maintained therein,theproductsofcombustion passaronnd and between the coils,and from thence through the passages or recesses C' and into the space between the depending diaphragm K and the outer wallof the section C, and from thence downwardly beneath the lower edge of the diaphragm into the space between the diaphragm and the exterior shell, and thence np wardly to the uptake. c

By the construction and operation above described the products of combustion are retained for a comparativelylong period of time in contact with the coils, and with the interior and exterior walls of the sectional castings forming the firebox, so that the heat thereofis communicated to the water within the sections and within the coil. rIhe steam-chamber of the generator-is the upper portion of the space within the cap F, so that it will be no4 tieed that the entire coil is below the water line of the generator.

In constructing a steam-generator as described the cost of manufacture is materially reduced, and the sectional firebox isprotected in a great measure from the high heat to which it is subjected, by reason of being hollow and filled with water, and by the peculiar pipe-connections the circulation of water is maintained therein and in the coil.

Having described my invention and its operation, what I claim isl. In a steam-generator of the class' described, the combination ofa fire-box, consisting of an annular hollow cast section having radial recesses at its upper end,with a hollow annular cast cap and a pendent magazine resting on said cap, substantially as described.

2. In a steam-generator of the class described, a iire-boX consisting of a hollow an nular section having radial recesses, a hollow cap, and pipe-connections communicatingwith the interior of 'the under section and of the cap, substantially as specified.

3. In a steam-generator, the combination of a hollow annular east section having radial re cesses in its upper end, a hollow cast cap, a series of pipes connecting the cap with the annular section, and a coil communicating with the connecting-pipes and with the interior ofthe lower section, substantially as specified.

4. The combination of a fire-box consisting of an annular hollow section, a cap mounted thereon and communicating therewith by means of exterior' pipes, a coil communicating with one of said pipes at its upper end, and with the hollow section at its lower end, and a depending inelosing cylinder or diaphragm, substantially as specified.

5. The combination of the hollow annular section having radial recesses in its top, the cap mounted thereon and connected therewith, as described, a depending diaphragm, and exteriorjacket with an uptake, substair tially as speciiied.

6. The combination of the section C, pro vided with the pipe D, and with the recesses C', the coil E, the cap F, and the connectingpipes F G, substantially as shown and described.

7. The combination of the section C, the cap` F, the coil E, the pipes F' G, uniting the section C and its cap, and the diaphragm K. resting on the cap, snbstantallyas shown and described.

8. The combination ol" the cap F, having conical opening F2, and the liange Fii at the bottom thereof, and the magazine H, having the flange AI-I, substantially as shown and deY scribed.

9. The combination of the base A, the grate B, the section C, having the pipe D, communicating with the lower portion of the interior thereof, the coil E, the. cap F, having the flange F, the magazine H, having the peripheral ange H', pipes F and G, and the outlet-pipe I, substantially as shown and` described. y

l0. The cap F, provided with the pipes F, in combination with the annular iirebox section C, provided with the pipes G, substantially as shown and described.

In testimony whereof I aflix. my signature in presence of two witnesses.

DICK M. KIRBY. fitnessesz B. PUTNAM (him-rouw, IavrNG Grams.

ICO 

